Liquid pump



May 29,v 1928. 1,671,663

Y w. s. AUSHERMAN Er AL LIQUID PUMP Filed April 15, 192e @L5 J4 Ef ya@ F522% ventoz attowum,

mmdwfwfm?" ZZAZwZe/'m/w Patented May 29, 192s. p `1,671,663

unirse 'grues rimani wIiLiAiis. Ausiinniithn, or LMAGE, Ann I'iAnn s.Ansirniniin, oiAiiInNE;

KANSAS.

LIQUD iir.

p v Appnatmn ined Apre 15, ieee. sensi no. iaze.

:Phe device forming the subject metter ot relates to coin-control: sindit isknown this application 1s a coincokntrol for a vendthatpcoin-controll'ed` mechanism carlno't'be 55 ing machine, and theinventionaims to procharncterized patentahly` pump pdetils.` vide novelmeans whereby the coin 1s per- Let 1t sutlice,l`tlie, to stette thatthe' umping l 5 niitted to drop out ofthe coin receptacle remechanismembodies the plunger Where# `gerdless ofthe pressure exerted on thethrust unto a pitman 12 is pivoted et 14, the lower liieinher whichoperates the machine throng end oi' the pitlnan `being pivote'dto aWrist 60 the instrumentality of the coin. pin 8, adjusthle (to vary thethroiv of the Another object of thel invention is to prop'lm'p plunger9) in a redini slot 7 "formed vide novel means whereby a lead slug or ina rotar, member 6 carried hy ashaft 4,

ether article having a transverse bending, journled 1n the support 1,and operted by strength Whih is less than `thatfoi a coin crank 5, orotherwise. The rotiiifinenibei- 65 or standard mintage, cannot be usedto oper- 6 may be a ratchet Wheel, engaged a back ate the device. stoppawvl that is pivotally mounted at 15 It is within the ro'vin-ce of thedisclosure loon the support '1.x Tlhe rotary member o to improve generaly end to enhance the util- 'crrles opener or spreeder for the coin reityof devices Vof that type to which the inc'eptrcle (hereiiiiftei"`described) find the 70 vention appertains; V y i l f Opener or spreader,marked by the nume'rl With the foregoing and other objects in 117,lras acircumferential earn `edge 27 which vieiv Which willy pper thedescription is d'ispos'etl eccentric/ally yelfith respect t theproceeds, the invention resides in the `comloishafti. l Oife v`end ofthe merriher 17, Instrkcd nation end arringementl of parts and in thethe numeral `18, formen shoulder which 75 details oi constructionhereinafter described is' engitged with a detent,I` next to he deandclaimed, it being understood that scribed.

5 changes in the precise vembed-inrant or the The support 1 `is providedwith spaced invention herein disclosed, may he .milde hearings 19"thereon is fnlcrurned a.y detent,

Within the scope of `what is climed, Without iii the forni of e.` bell'crank. The bell crank 80 departing from the spirit of the invention.detnt embodies an arm 21` held by a cap In the accompanying drawingspiece 2 tofswing on a fshat 23 `nnounted Figure 1` shows inverticallongitudinnl inthe jeziriri'gs;19.l Une end of the arm 21section, a device constriicted `in accordance of the hell c'riil detentlies normally in the With the invention, parts being in elevation;pfzith ofthe opeiiet or spreader 17, and en- 85 Figure 2 is a sectiononthe line 2-2 of g'ges-' thewshoulder 18. wnvvard Figure 1; p swingingihov'einent of the arm 2 is limited Figure 3 is asection on' thel'ine3-3 of b v a stop 24, such s a pin or the like,

Figure `2; y p the spring means Figure 4 is a section on the line 4-4 ofis provided" for holding doivn the arm 21 90 Figure Q p orf the stop2li, the said neans including a In carrying outvthe invention, there 1sde' ending iinlger25 onfwhich `the arn1`21 provided a support or casing1, equipped at strings, the `Iingerl Being mounted at its its top with a"guide 2. Above the support 1 upper end infn bracket 36 oli thesupport 1. is located a tank 10, which may be mounted The finger 25 listhr'eded for djustnient 95 oii a bracketQO, `carried by the support 1.into the brfaekett and isrheld in placev Liquid issupplied to the tanlrthrough a "mit 2BV on linger and pipe 3, leading ulruvafrdly` throughthe supthe xbrawfcket., 'lhere `1s an adjusting `nut` or port 1, andfromthe tank 1Q, liquid is carnt2u9`on tli'etinglerQ, lboi'fe VarinA p riedto `the point of use or delivery through -V cfmpiession spring 30srrou'nds a 100 ahose 1 1. Theliquidnfhich the tankl 1'() 'ref portionfinger 25, one end of "the ceives, is forced the pipe 3 by a spring"gaging the'adjiisting nntn2`99 pumping mechanism ivhich `includes [a theother "endof the'spring heering on "t `e plunger 9, lnountedntoreciprocate in the erm enf, l p y guid, 2- `The, .umpinee'nechaeise@Sg120i Th .Sfit e? bell Creek.. lre" yiels. 1 ,shown in 4great etal,becausethis-invention al U-hpedspring 33tlie"crottnot which is securedto the arm 21 at a point adjacent to the shaft 23, so that the spring31, and parts carried thereby, form the other arm of the bell cranklever or detent. The spring 31 embodies two depending side portions 32which constitute part of the coin receptacle. The coin receptacle iscompleted by oppositely disposed angle members 34-34 and 33-33, whichare secured to the side portions 32 of the spring 31 that forms one armof the bell crank detent. The members 34 are spaced at their inneredges, to form a slot 35. rlhe lower parts of the inwardly projectingflanges of the angle members 33 arecut away, as at 36, leaving onlythose parts 37 of theangle men'ibers 33 which bear against the sideportions 32 of a spring 31 directly, as shown in Figure 3. ling plates38 are secured to the side portions 32 of the spring 31, and the innerlongitudinal edges of the wing plates 38 converge, as shown best at 39in Figure 2. One of the side portions 32 of the spring 31 is turnedinwardly at its lower end, to fashion a coin retaining toe 40, bestshown in Figure 2. An adjusting device, such as a screw 41, connects theside portions 32 of the spring 31, so as to vary the distance betweenthe parts 32, to enable the vmachine to be altered for coins ofdifferent diameters, and

vstill have the coin held by the toe 40. The

adjusting device 41 connects the parts 32, in that it is threaded intoone of them, and bears upon the other, the said members 32 tending tospring inwardly toward each other.

The machine vembodies a thrust member which is marked generally by thenumeral 42 in Figure 3, the thrust member being in the form of a pushpin 43 having a head 44, a compressionA spring 45 being interposedbetween the head 44 anda part of the support l, the push pin 43 beingslidable in the support, and outward movement of the push pin,responsive to the spring 45, being limited by a shoulder 46 on the pushpin, which engages the support or casing 1. The pu-sh vpin 43 isadaptedvto be advanced with respect to the opening 35 that existsbetween the parts 34 of the coin receptacle, so `that the .inner endofthe push pin may engage with a coin 47 held by the toe 40 in thepassage 48 that exists between the parts 34 and of the coin receptacle.The push pin 44 is supplied at its inner end with oppositely projectingfins 49. There is a slot 50 in one of the side portions 32 of the spring31, and this slot lets the coin into the passage 48, the coin beingadapted to traverse a chute 51, carried by the support 1 and having ahopper 52 at its upper end, into which the coin finds its way through aslot 53 in the support or casing 1, a magnet 54 being disposed adjacentto the hopper or intake end 52 of the chute 51, to segregate slugs ofmagnetic metal, before they have a chance to get down into the machineand facilitate the unlawful working of it.

The ordinary operation of the `machine is as follows The operator puts acoin in the slot 53, and the coinltraverses the chute 51 and passesthrough the slot 50, into the passage 48, where the coin is held, by thetoe 4l), in the path of the push in 43. The push pin 43 is thrust inwarly, enraging the coin, and tilting the bell crank ever or detent on itsfulcrum 23` until the inner end of the arm 21 is out of the path of theshoulder 18 on the rotary member 6. 1 The rotary member 6 then can beturned, by means of the crank 5 or its equivalent, to operate theplunger 9 and forcea measured quantity of liquid up into the tank `l0through the pipe Vlien the rotary mein ber 6 is turned, the opener orspreader 17 on the rotary member 6 passes between the inclined edges 39of the coin receptacle, and opens it, the parts 32 of the vspring 31yielding for this purpose. `When the coin receptacle thus is opened, thecoin 47 is permitted to drop into a drawer 55er other receptacle in thesupport 1, and when the coin drops out of the coin receptacle, the coinreceptacle no longer is under the control of the. push )in 43, but goesback, under the impulse of the spring 30, into the position of Figure 1,so that the inner end of the arm 21 is in the path of the Shoulder 18,thereby preventing the operator from turning the shaft 4 Vand pumpingliquid indefinitely. i t

So faras the description of the operation above set forth is concerned,it would be possible for the operator,r to push in the pin 43, keep asteady pressure on the coin 47,'hold the coin in place notwithstandingthe fact that the coin receptacle had been spread apart laterally by theaction of the member 17, and obtain as much lquidas he wished, bydepositing a single coin.l Observe, however, that this cannot takeplace` because the eccentric edge 27 of the member 17 cooperates withthe undcrsurfaee of: thc arm 21, as the part 6 is rotated. thereby totilt the belt crank gradually into such aV position that the coin 47, inthe position shown in Figure 2. spaced from the iuner end of the pushpin 43. and, therefore, 'cannot he held in place by the push pin, forthe unlawful and improper purpose of obtaining more liquid than is paidfor by the deposit of a single coin. i

The spring 30 exerts a strong pressure on the arm 21 of the bell crankdetent, and this pressure may be adjusted by means of the nut 29. Thepressure exerted by the spring 30 is strong enough so that, in order toover-` come it, a coin of standard mintage must be interposed betweenthe inner end of the push pin Li3 and the parts 37.` If a Weak articleoccupies the place of the coin 47 in Figure 2, for instance, a lead`slug,the slugr will not be strong enough `to stand the pres .sure fromthe push pin Zlthat is necessaiy to overcome the action of the spring30, and the result is that the slug bends under the action of the pushpin and slips olf the parts 37 without causing the bell crank detent tobe operated and the arm 2l thereof lifted out of the path of theshoulder 1S. The reason for cutting away the lower portions of theinwardly extended 'flanges of 'the members is to leave a wide spacebetween the parts 3'?, as shown in Figure 3, it beingunnecessary,therefore, to bend a lead slug much, by the action of the push pin 43,before the slug slips off the parts 37, it being obvious that if theslug had to be pushed through the narrow slot that exists between theparts 33 in Figure t, it would be necessary to double the slug until itwas almost flattened together. A little bending of the slug, however,will permit it to slip off the narrow parts 37, under the action of thepush pin a3.

It may happen that a person will drop a ring-shaped washer into themachine. Then, the push pin 43 will saw bacl; and forth through the holein the `washer, without operating the machine, but the Washer will hangin place, in the position shown by the coin 47 in Figure 2, and if alegitimate purchaser deposits a coin, the coin will come to rest on topof the washer, ther pin will continue to work back and forth through thewasher, and the person who has deposited the coin will get nothing inreturn for it. The foregoing operation presupposes that the pin 43 isdevoid of the fins 49, but because the fins 49 are supplied, they willenengage a washer, when the push pin 43 is thrust inwardly, and pass onthe` washer., through the machine, thereby preventing the washer fromhanging in the position shown at Il? in Figure 2, and holding upl thefurther operation of the device.

That is claimed is l. In a device of the class described, a rotarymember, an opener on the rotary member and including a cam, a movabledetent engaging the opener to hold the rotary member .againstrotation, acoin receptacle carried by the detent and comprising separable parts,means for discharging a coin between said parts of the receptacle,mechanism under the control of anoperator for engaging a coin in thereceptacle, thereby to `move the detent out of holding engagement withthe opener, and means for` rotating the rotatable member to cause thecam to move the detent and the receptacle far enough so that saidmechanism will no longer cooperate with a coin in the receptacle, theopener coacting with the separable parts of the receptacle, when therotary member is rotated, to open the receptacle and release the coin.

2. In a device. of the vclass described,V a rotary member, an opener onthe rotary member and including a cam, a detent lever ful-v `crumed forswinging movement, one end of the lever engaging the opener to hold therotary member against rotation, a coin receptacle forming the other endof the lever and con'iprising separable parts,k means for discharging acoin between said parts of the receptacle, a push pin mounted for sidingmovement and under the control of an operator to engage a coin in thereceptacle, thereby to move the rst-specilied end of the lever out ofholding engagement with the opener, and means for rotating the rotatablemember to cause the cam to move the lever far enough so that the pushpin will no longer cooperate with a coin in the receptacle, the openercooperating with the separable parts of the receptacle, when the rotarymember is rotated, thereby to open the receptacle and release the coin.

ln a device of the class described, a bell crank detent and a fulcrumtherefor, a rotary member having a shoulder, a fixed stop, spring meansfor holding one arm ofthe bell crank detent on the stop and in the pat-hof the shoulder on the rotary member, the other arm of the detent beingin the form of a coin receptacle, means forconducting a coin into thecoin receptacle, a plunger, and

`means for so mounting the plunger that it will engage a coin in thereceptacle, tilt the detent against the action of the sprin n'ieans, andmove the first-specified arm o the detent out of the path of theshoulder; and mechanism for adjusting the aforesaid spring means toenable it to hold the detent against swinging movementresponsive to thethrust of the plunger, when the coin in the receptacle has a bendingstrength that is less than the bending strength of a coin of standardmintage.

In testimony that we claim the foregoing as our own, we have heretoaffixed our signatures.

` VILLIAM S. AUSHERMAN` HARRY S. AUSHERMAN.

